AWS SDK for Go (PILOT)
API Reference

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Between

import "github.com/aws/aws-sdk-go/service/dynamodb/expression"

func Between(op, lower, upper OperandBuilder) ConditionBuilder

Between returns a ConditionBuilder representing the result of the BETWEEN function in DynamoDB Condition Expressions. The resulting ConditionBuilder can be used as a part of other Condition Expressions or as an argument to the WithCondition() method for the Builder struct.

Example:

// condition represents the condition where the value of the item // attribute "Rating" is between values 5 and 10 condition := expression.Between(expression.Name("Rating"), expression.Value(5), expression.Value(10)) // Used in another Condition Expression anotherCondition := expression.Not(condition) // Used to make an Builder builder := expression.NewBuilder().WithCondition(condition)

Expression Equivalent:

expression.Between(expression.Name("Rating"), expression.Value(5), expression.Value(10)) // Let :five and :ten be ExpressionAttributeValues representing the value // 5 and the value 10 "Rating BETWEEN :five AND :ten"

op

OperandBuilder represents the idea of Operand which are building blocks to DynamoDB Expressions. Package methods and functions can establish relationships between operands, representing DynamoDB Expressions. The method BuildOperand() is called recursively when the Build() method on the type Builder is called. BuildOperand() should never be called externally. OperandBuilder and BuildOperand() are exported to allow package functions to take an interface as an argument.

lower

OperandBuilder represents the idea of Operand which are building blocks to DynamoDB Expressions. Package methods and functions can establish relationships between operands, representing DynamoDB Expressions. The method BuildOperand() is called recursively when the Build() method on the type Builder is called. BuildOperand() should never be called externally. OperandBuilder and BuildOperand() are exported to allow package functions to take an interface as an argument.

upper

OperandBuilder represents the idea of Operand which are building blocks to DynamoDB Expressions. Package methods and functions can establish relationships between operands, representing DynamoDB Expressions. The method BuildOperand() is called recursively when the Build() method on the type Builder is called. BuildOperand() should never be called externally. OperandBuilder and BuildOperand() are exported to allow package functions to take an interface as an argument.

ConditionBuilder

ConditionBuilder represents Condition Expressions and Filter Expressions in DynamoDB. ConditionBuilders are one of the building blocks of the Builder struct. Since Filter Expressions support all the same functions and formats as Condition Expressions, ConditionBuilders represents both types of Expressions. More Information at: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.ConditionExpressions.html More Information on Filter Expressions: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Query.html#Query.FilterExpression

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